Elements and Performance Criteria
- Identify range of utilities and services used by mill
- Establish distributed services used in mill.
- Ensure schematics showing location and distribution of services are available and understood by key personnel.
- Categorise services as critical to mill operation or ancillary.
- Develop contingency strategies in the event of failure of a critical service for the mill.
- Review mill electric power system for start-up and power demand management
- Identify mains supply terminal, input voltage and electricity supplier.
- Identify mill transformers and distribution to sub-mains.
- Identify back–up generation and supply system including automatic and manual operation conditions.
- Identify location of mill equipment and areas supplied by each sub-main and switchboard.
- Identify key features and requirements of installed electrical safety systems including lock off and isolation switches.
- Obtain maximum demand and diversity factor (power factor correction) and identify implications for mill operations.
- Establish motor control and start up procedures according to manufacturer, engineer and supply authority procedures.
- Review scope of hydrocarbon fuel use by mill
- Identify type and location of mill controls
- Identify mill operations and equipment controlled automatically.
- Identify mill operations and equipment controlled through central process control stations/ terminals.
- Identify mill operations and equipment controlled manually.
- Establish back up strategies for mill control in the event of failure of control equipment.
- Control pneumatic conveying system
- Determine processes where negative or positive pressure is required.
- Monitor air speed and volume requirements for conveying tasks.
- Select air speed and volume appropriate for exhausts.
- Balance negative pressure systems.
- Monitor for abnormal increases in blowline pressure.
- Determine cleaning intervals for dust collectors.
- Control wheat damping and conditioning
- Establish strategies and practices for efficient use of power and automation